Constitutive and inducible expression of cytochromes P4501A (CYP1A1 and CYP1A2) in normal prostate and prostate cancer cells
| Autor: | Kenneth R. Cutroneo, Kenneth M. Sterling |
|---|---|
| Rok vydání: | 2004 |
| Předmět: |
Male
PCA3 medicine.medical_specialty urologic and male genital diseases Biochemistry Prostate cancer DU145 Cytochrome P-450 CYP1A2 Prostate Cell Line Tumor Internal medicine LNCaP Cytochrome P-450 CYP1A1 polycyclic compounds medicine Humans Benzopyrenes Molecular Biology Chemistry Prostatic Neoplasms Cancer Cell Biology respiratory system medicine.disease Primary tumor medicine.anatomical_structure Endocrinology Cell culture Cancer research |
| Zdroj: | Journal of Cellular Biochemistry. 91:423-429 |
| ISSN: | 1097-4644 0730-2312 |
| DOI: | 10.1002/jcb.10753 |
| Popis: | Constitutive and benzo[a]pyrene (B[a]P) inducible expression of CYP1A1 and CYP1A2 in prostate cancer and normal prostate epithelial cells were examined by immunoblotting. Androgen independent prostate cancer cell lines DU145 and PC3 have constitutive expression of CYP1A and CYP1A1 and CYP1A2, respectively. Four micromolar B[a]P did not appear to induce CYP1A1 or CYP1A2 expression in DU145 or PC3 cells. The androgen dependent prostate cancer cell line, LnCap, also has constitutive expression of CYP1A1 and CYP1A2. However, both CYP1A1 and CYP1A2 are induced by treatment of LnCap cells with 4 microM B[a]P. Untreated normal prostate and primary prostate tumor cells have no detectable CYP1A1 expression. Treatment with 4 microM B[a]P induced CYP1A1 expression in both normal and primary tumor prostate cells. Constitutive CYP1A2 expression was detected in normal prostate cells with little or no induction by exposure to 4 microM B[a]P. Primary prostate tumor cells did not show constitutive expression of CYP1A2. However, CYP1A2 was induced by 4 microM B[a]P in primary prostate tumor cells. These observations indicate that hormonal and cancer specific factors affect the expression and induction of the phase I metabolic enzymes, CYP1A1 and CYP1A2 in prostate cells. These observations may be related to the potential smoking-linked higher risk of prostate cancer development and morbidity of prostate cancer patients who smoke. |
| Databáze: | OpenAIRE |
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